Method of processing waste resin of nuclear power plant

Abstract

The invention discloses a method of processing waste resin of a nuclear power plant. The method comprises following steps: extracting a predetermined amount of APG waste resin from a randomly chosen object; measuring at least one gamma nuclide of the APG waste resin by a gamma spectrometer system and a dosage rate instrument, obtaining multiple parameters through detection; according to the parameters, carrying out calculation to obtain the activity concentration value of gamma nuclide, comparing the activity concentration value of gamma nuclide with a control release limited value; if the activity concentration value of gamma nuclide is not greater than the control release limited value, taking the APG waste resin as normal wastes; and if the activity concentration value of gamma nuclideis greater than the control release limited value, taking the e APG waste resin as radioactive wastes. The processing method has the advantages that slightly polluted APG waste resin is divided into APG waste resin that meets the control release requirements and APG waste resin that does not meet the control release requirements; the divided APG waste resin is processed individually, the processing efficiency is improved, the processing amount of radioactive wastes is reduced, the safety for the method of processing radioactive resin is improved, and the waste processing cost is reduced at thesame time.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant radioactive waste treatment, in particular to a nuclear power plant waste resin treatment method applied to a steam generator blowdown system. Background technique [0002] In the operation of nuclear power plants, the resin used in the blowdown system of steam generators (hereinafter referred to as APG) plays the role of purifying and treating process wastewater. Compared with other radioactive wastes in nuclear power plants, the amount of APG waste resin is relatively small. After the used APG waste resin is discharged from the equipment, it is generally stored in a container, and it needs to be disposed of when the storage volume reaches a certain value or the specified time , then perform batch processing in a unified manner. [0003] According to "Nuclear Science and Technology Terminology Part 8: Radioactive Waste Management" (GBT 4960.8-2008), radioactive waste refers to radioa...

AI Technical Summary

Problems solved by technology

However, the above-mentioned treatment methods have their own defects. Although the polymer solidification has a high inclusion capacity, the cost of the curing agent is high; although the cement solidification process is simple and the treatment cost is low, the inclusion capacity is low and the nuclide leaching rate is high.

Although the oxidative decomposition method has a good volume reduction effect, it has high process requirements and high processing costs

The treatment methods of hot pressing, microbial transformation and direct packaging of high-firm containers are currently in the development stage, and the technology is immature and cannot be popularized and used

[0005] Therefore, in view of the fact that the treatment method of radioactive APG waste resin is still in an imperfect state, there is an urgent need for a safe, efficient and feasible waste resin treatment method.

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